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AISI 317L Stainless Steel vs. EN AC-51100 Aluminum

AISI 317L stainless steel belongs to the iron alloys classification, while EN AC-51100 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AISI 317L stainless steel and the bottom bar is EN AC-51100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
57
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 44
4.5
Fatigue Strength, MPa 220
58
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 82
26
Tensile Strength: Ultimate (UTS), MPa 550
160
Tensile Strength: Yield (Proof), MPa 250
80

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 1010
170
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1380
620
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 14
130
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
34
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
110

Otherwise Unclassified Properties

Base Metal Price, % relative 21
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 4.3
8.7
Embodied Energy, MJ/kg 59
150
Embodied Water, L/kg 160
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
6.0
Resilience: Unit (Modulus of Resilience), kJ/m3 150
47
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 3.8
53
Thermal Shock Resistance, points 12
7.3

Alloy Composition

Aluminum (Al), % 0
94.5 to 97.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 58 to 68
0 to 0.55
Magnesium (Mg), % 0
2.5 to 3.5
Manganese (Mn), % 0 to 2.0
0 to 0.45
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 11 to 15
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.55
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15